Eagle-Eye

Eagle-Eye is a Tome of Knowledge Bestiary entry for Great Eagle.

Instructions: Order and Destruction

Kill a champion eagle named Ironfeather that is located at 46.4k 61k in Eataine, west of the Shrine of Lileath, on a little rock.

Once the unlock triggered, you can claim the jewel buying it from the correct merchant in Library (Order) / Lyceum (Destruction).